Results 31 to 40 of about 178,465 (241)

Negative phase time for Scattering at Quantum Wells: A Microwave Analogy Experiment

, 2000
If a quantum mechanical particle is scattered by a potential well, the wave function of the particle can propagate with negative phase time. Due to the analogy of the Schr\"odinger and the Helmholtz equation this phenomenon is expected to be observable ...
A. Enders, A. Haibel, A. Steinberg, C.-F. Li, Ch. Spielmann, E. Merzbacher, G. Nimtz, H. J. Eul, H. M. Brodowsky, J. Y. Lee, L. J. Wang, R.-M. Vetter, Th. Hartman, Y. Japha   +13 more
core   +2 more sources

The nature of electron density enhancement over a wide altitude range during ionosphere heating experiments at EISCAT

Earth and Planetary Physics
During the course of ionospheric heating experiments, researchers at the European Incoherent Scatter Scientific Association (EISCAT) observed an apparent electron density enhancement.
Jun Wu, Jian Wu, Jie Feng, QingLiang Li, ShuJi Hao, ZhengWen Xu, HaiSheng Zhao, YaBin Zhang   +7 more
doaj   +1 more source

Electromagnetic Wave Propagation in Random Waveguides [PDF]

Multiscale Modeling & Simulation, 2015
42 pages, 3 ...
Alonso, Ricardo, Borcea, Liliana
openaire   +2 more sources

Cherenkov radiation in a gravitational wave background [PDF]

, 2000
A covariant criterion for the Cherenkov radiation emission in the field of a non-linear gravitational wave is considered in the framework of exact integrable models of particle dynamics and electromagnetic wave propagation.
Alexander B Balakin, Balakin A B, Balakin A B, Calura M, Ginzburg V L, Gupta A, José P S Lemos, Kramer D, Landau L D, Landau L D, Maugin G A, Misner C W, Richard Kerner, Sbytov Yu G, Synge J L   +14 more
core   +2 more sources

Particle simulation of lower hybrid waves in tokamak plasmas [PDF]

, 2014
Global particle simulations of the lower hybrid waves have been carried out using fully kinetic ions and drift kinetic electrons with a realistic electron-to-ion mass ratio.
Bao, J., Kuley, A., Lin, Z., Lu, Z. X., Wang, Z. X.   +4 more
core   +1 more source

A Case Study of the Wavenumber Transition between Westward Quasi-2 Day Wave s = 3 and s = 4 Modes in the Mesosphere

Atmosphere, 2023
We report observations of the wave number transition between two types of westward-propagating quasi-2 day wave (QTDW) with zonal wave number s = 3 and s = 4 in the mesosphere. The Aura/MLS temperature datasets from January and February 2011 are utilized
Sheng-Yang Gu, Yafei Wei, Xiaoming Sha, Liang Tang, Na Li   +4 more
doaj   +1 more source

Radio-Wave Propagation and Electromagnetic Surface Waves [PDF]

Proceedings of the National Academy of Sciences, 1947
A Discrepancy and Its Resolution. - The problem of the propagation of radio-waves along the surface of the (plane) earth was first treated in a celebrated paper by A. Sommerfeld (1909).(1) Let the (r, φ)-plane of a cylindric system of coordinates coincide with the plane of the earth surface and let the z-axis point vertically upward.
openaire   +3 more sources

On nonclassical boundary conditions for the contact of thin interlayers with different physical and mechanical properties on wave propagation in anisotropic media

Қарағанды университетінің хабаршысы. Физика сериясы, 2022
Wave processes are intensively studied in various fields of physics: electrodynamics, plasma physics, radiophysics, acoustics, hydrodynamics, etc. Along with the study of electromagnetic and elastic wave processes, the research of patterns of wave ...
Н.А. Испулов, Абдул Кадыр, А.Ж. Жумабеков, А.А. Курманов, Қ.Р. Досумбеков   +4 more
doaj   +1 more source

Electromagnetic wave multipath channel model based on image method in mine tunnel

Gong-kuang zidonghua, 2017
In view of complicated electromagnetic wave propagation environment in mine tunnel, a multipath channel model of electromagnetic wave propagation in mine tunnel was established by use of image method.
YAO Shanhua
doaj   +1 more source

Plane-Wave Propagation in Electromagnetic PQ Medium

, 2015
Two basic classes of electromagnetic media, recently defined and labeled as those of P media and Q media, are generalized to define the class of PQ media.
Lindell, Ismo V.
core   +1 more source